Misc - Refactor cases of >2 underscores as per libcxx/TODO.txt#167250

reactive-firewall wants to merge 1 commit intollvm:mainllvm/llvm-project:mainfrom

reactive-firewall:libcxx-misc-TODO-refactorreactive-firewall/FORK-llvm-project-libcxx-misc-TODO-refactor-dunder:libcxx-misc-TODO-refactorCopy head branch name to clipboard